KR20140148075A - Low frequency mask device using bio-feedback - Google Patents

Abstract

An embodiment of the present invention relates to a low frequency mask device using bio-feedback, wherein an electromyogram generated in a region desired by a user is sensed using bio-feedback so that an appropriate quantity of low frequency stimulation which is suitable for the user can be applied. The low frequency mask device of an embodiment of the present invention comprises: a mask which is made of flexible material, is closely adhered on the face of a user to wrap his/her face, and includes eyes, nose, and mouth exposure positions; at least one electromyogram sensor unit which is coupled in the inside of the mask to measure electromyogram signals from the face of the user; at least one low frequency pad which is adhered in the mask to be attached and detached to stimulate a particular part of the face of the user; and a control unit which obtains an effective value for the electromyogram signals measured by means of the electromyogram sensor unit and controls the low frequency stimulation of the low frequency pad based on the effective value, wherein the operation of the low frequency pad is ended when the effective value is larger than an average value of a first electromyogram signal value obtained when the face of the user is in a normal state and a second electromyogram signal value in a motional state, and the first and second electromyogram signal values are pre-measured by means of the electromyogram sensor unit.

Description

TECHNICAL FIELD [0001] The present invention relates to a low frequency mask device using biofeedback,

One embodiment of the present invention relates to a low frequency mask apparatus using biofeedback.

Recently, the use of low frequency personal medical devices has been increasing due to aging society and rising oil prices. This has a great impact on the cosmetics market, and the number of products is rapidly increasing. Especially, the beauty market is growing rapidly and it has potential to develop in the future. In addition, such low-frequency stimulation devices have been clinically verified not only for the patient's pain but also for the wrinkle-reducing effect.

However, wrinkle remedies using cosmetic devices that are used domestically depend on expensive imported products, and most of the products are not considered safety in terms of system.

Therefore, surgical and chemical products can minimize side effects, relieve stress and treat pain at the same time, and develop safe products.

Especially, low - frequency stimulator is widely used to relieve user 's stress and relieve pain, but there is no beauty product or biofeedback applied product.

Published patent publication No. 10-2012-0064921 'Portable wireless transmission type electromyographic sensor and sensor system' Patent Document No. 10-1198690 'Electrode device for skin care and skin care device having the same'

An embodiment of the present invention provides a low-frequency mask apparatus using biofeedback capable of detecting an electromyogram generated at a user's desired site using biofeedback and applying an appropriate amount of low-frequency stimulation to a user.

A low frequency mask apparatus using biofeedback according to an embodiment of the present invention comprises a mask formed of a flexible material and closely adhered to a face of a user and having eyes, nose and mouth exposed portions formed therein; At least one electromyogram sensor attached to the inside of the mask to measure an electromyogram signal of a user's face; At least one low frequency pad attached to the inside of the mask so as to be detachable so as to stimulate a specific portion of a user's face at a low frequency; And a control unit for obtaining an effective value of the electromyogram signal measured by the electromyogram sensor unit and controlling a low frequency stimulus of the low frequency pad on the basis of the effective value, The operation of the low frequency pad may be terminated when the first EMG signal value in the normal state is greater than the average value of the second EMG signal value in the motion state.

The EMG sensor unit may include a plurality of EMG electrodes having different channels on the forehead, both the ball and the jaw of the user's face.

Wherein the control unit comprises: a signal preprocessing unit for amplifying an electromyogram signal measured by the electromyogram sensor unit and removing noise; An A / D converter for converting an output signal of the signal processing unit into a digital signal; An effective value calculating unit for receiving an output signal from the A / D converter and calculating an effective value of the electromyogram signal; Wherein the effective value of the electromyogram signal calculated by the effective value calculation unit is set to a first electromyogram signal value that is an effective value in the case of a normal state of the user's face measured by the electromyogram sensor unit and a second electromyogram signal value that is an effective value An effective value comparison unit for comparing the average value of the EMG signal values with the average value of the EMG signal values; And a low frequency pad operation control unit for terminating the operation of the low frequency pad when the effective value of the electromyogram signal calculated by the effective value comparison unit is greater than the average value of the first and second electromyography effective values, ; A display unit for outputting a time-series magnitude of the electromyogram signal in a spectrum form using an effective value of the electromyogram signal output from the effective value calculation unit or an output signal from the A / D converter; And a storage unit for storing the first EMG signal value and the second EMG signal value and an RMS value of the EMG signal output from the RMS calculating unit.

Wherein the low frequency pad operation control unit comprises: a low frequency stimulation control unit for controlling whether the low frequency stimulation is performed; A low frequency time controller for setting and controlling the stimulation time of the low frequency; A low frequency intensity controller for setting and controlling the intensity of the low frequency stimulation; And a low-frequency pulse controller for setting and controlling the magnetic pole waveform and the low-frequency waveform.

In addition, the low frequency mask apparatus using biofeedback according to an embodiment of the present invention may further include a communication interface unit capable of transmitting and receiving data with an external computer apparatus.

The low frequency mask apparatus using biofeedback according to an embodiment of the present invention attaches an electromyogram sensor unit and a low frequency pad on the inside of a mask to measure an electromyogram signal of a desired part of a face desired by the user and apply an appropriate low frequency, Since the low-frequency stimulation is terminated when the RMS value is equal to or higher than the average value of the RMS value during exercise and the RMS value during exercise, the manufacturing cost is low and it is economical, It may be effective in improving the skin beauty of the area.

1 is a view showing a low-frequency mask apparatus using biofeedback according to an embodiment of the present invention.
2 is a block diagram schematically showing a configuration of a low-frequency mask apparatus using biofeedback according to an embodiment of the present invention.
3 is a block diagram schematically showing the control unit of Fig.
4A and 4B are tables and graphs showing measurement of facial EMG by users using a low frequency mask device using biofeedback according to an embodiment of the present invention.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in which those skilled in the art can readily implement the present invention.

FIG. 1 is a view showing a low-frequency mask apparatus using biofeedback according to an embodiment of the present invention, FIG. 2 is a block diagram schematically showing a configuration of a low-frequency mask apparatus using biofeedback according to an embodiment of the present invention FIG. 3 is a block diagram schematically showing the control unit of FIG. 1, FIGS. 4A and 4B are tables showing measurement of facial electromyograms of users using a low-frequency mask apparatus using biofeedback according to an embodiment of the present invention, Graph.

1 to 3, a low-frequency mask apparatus using biofeedback according to an embodiment of the present invention includes a mask 1, an electromyogram sensor unit 10, a low-frequency pad 20, and a controller 30 .

The mask 1 is formed of a flexible material and closely contacts the face portion of the user. The mask 1 has eyes, nose, and mouth exposed portions, and an EMG sensor unit 10 and a low-frequency pad 20 are formed inside. With this structure, when the user wears the mask 1 according to the present invention, not only the frustration felt by the user is remarkably reduced, but also all the users can use it without any problem regardless of the face size and shape of the face. The mask 1 is made of a synthetic resin material having elasticity such as silicone or rubber.

The mask 1 may be formed with a hook member 1a to be fastened to the ear for fixing to the user's body. As shown in Fig. 1, the present mask 1 is symmetrically arranged so as to be in contact with the chin / cheek of the user and to be separated from each other by a connecting member having elasticity across the nose, And may further comprise a lower fixing part for fixing the mask to the mask 1. In the drawing, reference numeral 21 denotes a hollow passage through which the electric wire 1b for supplying power to the low frequency magnetic pole pad is passed, formed on the mask 1, and through which the electromyogram sensor unit 10 And the low frequency pad 20 are connected to the control unit 30.

The electromyogram sensor unit 10 is attached to the inside of the mask 1 and comprises at least one electromyogram signal measuring sensor for measuring an EMG signal (electromyographic signal) of the user's face. The magnitude of the EMG signal is usually less than 10 mV and the frequency range is less than 500 Hz. The EMG sensor unit 10 may include a plurality of EMG electrodes having different channels on the forehead, both the ball and the jaw of the user's face. In addition, the electromyogram sensor unit 10 may be a needle electrode, a dish electrode, or the like.

The low-frequency pad 20 is attached to the inner side of the mask 1 in a detachable structure so as to stimulate a specific portion of the user's face at a low frequency. The low-frequency pad 20 may include a plurality of low-frequency pads 20, and may include an electric insulating material and a pair of supply and reception-side electrode plates provided on both sides of the electric insulating material. The starting point of a specific portion of the user's face may be stimulated at low frequencies . In addition, the low-frequency pad 20 may be provided as a vibration element for performing low-frequency vibration massage on a specific part of the user's face.

The control unit 30 is electrically connected to the electromyogram sensor unit 10 and the low frequency pad 20 provided in the mask 1 through the electric wire 1b to measure the electromyogram measured by the electromyogram sensor unit 10. [ And the low-frequency stimulation of the low-frequency pad 20 is controlled on the basis of the effective value, and the first value of the first value when the effective value is the steady state of the user's face previously measured by the electromyogram sensor unit 10 The operation of the low frequency pad 20 is terminated when it is larger than the average value of the EMG signal value and the second EMG signal value in the motion state.

In order to implement this operation, the control unit 30 includes a signal preprocessing unit 310, an A / D converter 320, an effective value calculation unit 330, an effective value comparison unit 340, a low frequency pad operation control unit 350, (360), a storage unit (380), and a communication interface unit (390). The components of the control unit 30 may be implemented on one or more printed circuit boards and may further include a system having a drive program connected to the printed circuit board to transmit a predetermined command in response to an external input . Also, although not shown, the control unit 30 may further include a power supply unit for receiving power. However, in the present invention, since a relatively small-sized low frequency is supplied to improve the wrinkles on the user's face, it can be manufactured in a small size and the mask apparatus can be driven with low power.

The signal preprocessing unit 310 amplifies the electromyogram signal measured by the electromyogram sensor unit 10 and removes noise. To this end, the signal preprocessing unit 310 includes an amplifier for amplifying an EMG signal measured by the electromyogram sensor unit 10 and a low noise filter for eliminating noise of a signal output from the amplifier can do. Since the electromyogram signal measured by the electromyogram sensor unit 10 is at a low level, the amplifier converts and amplifies the signal into about 0 to 5V. The filter unit includes a notch filter having a cut-off frequency of 60 Hz to remove power source noise, a band-pass filter for band-pass filtering that passes only a band of 0.1 Hz to 500 Hz for eliminating low-frequency noise, Filters. The signal preprocessing unit 310 may be provided with a buffer (not shown) in front of the amplifier to adjust the impedance of the electromyogram signal measured by the electromyogram sensor unit 10 and then supply the impedance to the amplifier.

The A / D converter 320 converts the output signal of the analog signal processing unit into a digital signal.

The effective value calculating unit 330 receives an output signal from the A / D converter 320 and calculates an effective value of the electromyogram signal. The RMS value calculating unit 330 calculates an RMS value of each channel output signal from the plurality of electromyogram sensor units 10 output from the A / .

[Equation 1]

Here, x is an electromyogram signal measured in one of the channels, n is the order of acquired signals, and N is the number of obtained signals.

The rms value calculating unit 330 calculates the rms value of the electromyogram signal including the time-series cumulative integral of the output signal of each channel from the plurality of electromyogram sensor units 10 output from the A / D converter 320, 2 < / RTI >

&Quot; (2) "

Here, E is the power of the EMG signal, x is the EMG signal measured in one of the channels, n and k are the orders of the acquired signals, N is the number of obtained signals, and?

In the present invention, the effective value and the cumulative integrated value of the output signal from the A / D converter 320 calculated by the effective value calculation unit 330 can be provided to the storage unit 380 and the display unit 360.

The effective value comparing unit 340 compares the effective value of the electromyogram signal calculated by the effective value calculating unit 330 with the first electromyogram signal which is an effective value in the case of the normal state of the face of the user measured in advance by the electromyogram sensor unit 10. [ And an average value of the second electromyogram signal value, which is an effective value in the case of the exercise state.

When the effective value of the electromyogram signal calculated by the effective value calculating unit 330 is larger than the average value of the first and second electromyographic effective values as a result of the comparison by the effective value comparing unit 340, The operation of the low frequency pad 20 can be terminated. In addition, the low-frequency operation control unit may apply a low-frequency of a proper intensity to a specific portion of the user's face based on the effective value of the electromyogram signal measured by the electromyogram sensor unit 10. [

The low frequency pad operation controller 350 includes a low frequency stimulation controller 351, a low frequency time controller 352, a low frequency intensity controller 353, and a low frequency pulse controller 354. That is, the low-frequency pad operation controller 350 applies low-frequency waves of appropriate size, time, intensity, and pulse to specific parts of the user's face based on the rms value of the electromyogram signal measured by the electromyogram sensor unit 10 . For example, the low-frequency pad operation control unit 350 may divide the intensity of the low-frequency wave into 10 levels, and control the low-frequency wave to be applied to a specific portion of the sensitive face for a maximum of 10 minutes at the lowest intensity .

The low-frequency magnetic pole control unit 351 is an apparatus for controlling the low-frequency magnetic pole, and may be provided with an on-off switch or the like.

The low-frequency time control unit 352 is an apparatus for setting and controlling the low-frequency stimulation time, and may be provided with a timer or the like.

The low-frequency intensity controller 353 is an apparatus for setting and controlling a low-frequency stimulus intensity, and may be provided with an up-down counter or the like.

The low-frequency pulse control unit 354 is a device for setting and controlling the low-frequency magnetic pole waveform and speed.

The display unit 360 outputs the time-series magnitude of the EMG signal in the form of spectrum using the effective value of the EMG signal output from the effective value calculating unit 330 or the output signal from the A / D converter 320. The display unit 360 can display various information besides spectral data using a liquid crystal display (LCD) or the like. For example, as shown in FIGS. 4A and 4B, the display unit 360 may display data on measurement of facial EMF of users using a low-frequency mask device using the biofeedback in the form of a table or a graph .

The storage unit 380 stores the first EMG signal value and the second EMG signal value and the RMS value of the EMG signal output from the RG calculator 330.

The communication interface unit 390 is a device for transmitting and receiving data with an external computer device 40. [ For example, the user may store normal EMG signals and the like in the storage unit 380, and then transmit the EMG signals to a remote user or a computer of a therapist through a wired / wireless communication network, thereby helping in therapy and beauty management. In addition, the communication interface unit 390 transmits a signal using a short-range wireless communication scheme through a wireless communication network. A Bluetooth communication scheme, a Zigbee communication scheme, an RFID communication scheme, or the like can be used.

On the other hand, although not shown, the components of the control unit 30 may be mounted on one or more printed circuit boards, and such printed circuit boards may be provided and protected within an integral control box .

In this case, the control box may be formed of a composite resin composition against an impact from the outside of the box.

The composite resin composition is a mixed resin of a polypropylene resin and an intermolecular material in which an engineering plastic is kneaded. The composite resin composition is excellent in thermal deformation temperature, impact resistance and mechanical strength, and can be effectively used for parts inside a vehicle.

Such a composite resin composition may include a polypropylene resin, an engineering plastic, a rubber-based resin, and an inorganic filler.

The polypropylene resin may be contained in an amount of 30 to 60 parts by weight based on 100 parts by weight of the composite resin composition. If the content of the polypropylene resin is less than 30 parts by weight, the price competitiveness may be low. If the content of the polypropylene resin exceeds 60 parts by weight, heat resistance may be deteriorated.

The engineering plastic may be included in an amount of 25 to 60 parts by weight based on 100 parts by weight of the composite resin composition. If the content of the engineering plastic is less than 25 parts by weight, the strength may be reduced. If the engineering plastic is more than 60 parts by weight, the price competitiveness may be lowered. The engineering plastic may be at least one of polycarbonate and polyphenylene oxide resin, preferably polyphenylene oxide resin.

The rubber-based resin is added to improve the impact resistance of the composite resin composition, and may be included in an amount of 1 to 20 parts by weight based on 100 parts by weight of the composite resin composition. If the content of the rubber-based resin is less than 1 part by weight, it may be susceptible to impact, while if it exceeds 20 parts by weight, the heat resistance may decrease. The rubber-based resin may be at least one of styrene-ethylene-butylene-styrene (SEBS), ethylene-propylene rubber (EPR), ethylene-butylene rubber (EBR) and ethylene-octene rubber (EOR).

The inorganic filler is added to improve the elastic modulus of the composite resin composition, and may be included in an amount of 1 to 20 parts by weight based on 100 parts by weight of the composite resin composition. If the content of the inorganic filler is less than 1 part by weight, the rigidity may be deteriorated. If the content is more than 20 parts by weight, it may become too stiff. The inorganic filler may be at least one of talc, barium sulfate, calcium carbonate, clay and mica, and is preferably talc having a particle size of 0.5 to 10 mu m.

In the present invention, a control box formed by molding the composite resin composition may be provided. Such a control box is manufactured through an extrusion process and an injection process, which are known in the art, so that the respective components constituting the control unit 30 mounted therein can be protected from external impacts.

The low-frequency mask apparatus using the biofeedback according to the present invention configured as described above can measure the change of the face of the user by measuring the frequency of the user's face, (RMS) value of the waveform amplitude is measured for a predetermined period of time by executing a drive program, and the waveform of each channel from the plurality of electrodes is measured for a predetermined period of time, And may be designed so that the drive program is terminated when the effective value is equal to or greater than the average value of the effective value and the actual value during exercise. Therefore, the low-frequency mask device using the biofeedback can detect a degree of muscle activity occurring at a desired site using biofeedback to improve skin wrinkles of a user's face, and apply a proper amount of low-frequency stimulation to the user.

On the other hand, the outer surface of the mask 1 and the wire 1b is coated with a fragrance material having a function such as a treatment for respiratory diseases, thereby improving the user's fatigue and health.

The functional oil may be mixed with 95 to 97% by weight of a perfume, 3 to 5% by weight of a functional oil, 50% by weight of a spruce leaf oil, And 50 wt% of kernel oil (kernel oil).

It is preferable that the functional oil is mixed in an amount of 3 to 5% by weight based on the perfume. If the mixing ratio of the functional oil is less than 3 wt%, the effect is insignificant. If the mixing ratio of the functional oil exceeds 5 wt%, the function is not greatly improved, but the manufacturing cost is greatly increased.

Spruce leaf oil in the functional oil is an oil obtained from the spruce leaf and has good effect on treating blood pressure increase due to pain, depression, psychological stress.

Peach kernel oil is effective in treating respiratory-related diseases such as sedation, bronchitis and pain relief.

Since such functional oil is coated on the outer surface of the mask 1 and the electric wire 1b, it is possible to improve user's fatigue recovery and health.

As described above, the present invention is not limited to the above-described embodiments, but rather may be applied to other embodiments of the present invention It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

1: mask 10: electromyogram sensor unit
20: low frequency pad 30:
40: external computer device 310: signal preprocessing unit
320: A / D converter 330: RMS value calculating section
340: RMS value comparison unit 350: Low frequency pad operation control unit
360: display section 380: storage section
390: Communication interface unit

Claims (5)

A mask 1 formed of a flexible material and closely adhered to a user's face and having eyes, nose and mouth exposed portions formed thereon;
At least one electromyogram sensor part (10) attached to the inside of the mask (1) and measuring an electromyogram signal of a face of the user;
At least one low frequency pad (20) attached in a detachable structure to the inside of the mask (1) to stimulate a specific region of a user 's face at a low frequency; And
And a control unit for controlling the electromyogram sensor unit to calculate an effective value for the electromyogram signal measured by the electromyogram sensor unit and controlling a low frequency magnetic pole of the low frequency pad based on the effective value, The control unit 30 terminates the operation of the low frequency pad 20 when the first EMG signal value in the normal state of the face of the user measured in advance by the user is greater than the average value of the second EMG signal value in the movement state The low frequency mask device according to claim 1, The method according to claim 1,
Wherein the EMG sensor unit (10) comprises a plurality of EMG electrodes having different channels on the forehead, both sides of the face, and the jaw of the user's face. The method according to claim 1,
The control unit 30
A signal preprocessing unit 310 for amplifying an electromyogram signal measured by the electromyogram sensor unit 10 and removing noise;
An A / D converter 320 for converting an output signal of the signal processor into a digital signal;
An effective value calculating unit 330 receiving the output signal from the A / D converter 320 and calculating an effective value of the electromyogram signal;
When the effective value of the electromyogram signal calculated by the effective value calculation unit 330 is a first EMG signal value which is an effective value in the case of a normal state of the user's face measured in advance by the electromyogram sensor unit 10, And an average value of the second electromyogram signal value, which is an effective value of the first electromyogram signal value;
If the effective value of the EMG signal calculated by the effective value calculating unit 330 is greater than the average value of the first EMG effective value and the second EMG effective value as a result of the comparison of the effective value comparing unit 340, A low frequency pad operation control unit 350 for terminating the operation of the low frequency pad operation control unit 350;
A display unit 360 for outputting the time series magnitude of the electromyogram signal in a spectrum form using the effective value of the electromyogram signal output from the effective value calculator 330 or the output signal from the A / D converter 320; And
And a storage unit (380) for storing the first EMG signal value and the second EMG signal value and the effective value of the EMG signal output from the effective value calculation unit (330) . The method of claim 3,
The low frequency pad operation controller 350
A low frequency stimulation control unit 351 for controlling whether the low frequency stimulation is performed;
A low-frequency time controller 352 for setting and controlling the low-frequency stimulation time;
A low frequency intensity controller 353 for setting and controlling the high frequency stimulus intensity; And
And a low frequency pulse control unit (354) for setting and controlling the magnetic pole waveform and speed of the low frequency. The method according to claim 1,
Further comprising a communication interface unit (390) capable of transmitting and receiving data to and from an external computer device (40).

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